Semi-weekly south Kentuckian. [volume] (Hopkinsville, Ky.) 1883-1889, 1887-10-28
SCIENCE AND INDUSTRY.
-Thore arc 400, OOO. 600 iuyo.to a

There are sl0o. 900, 900 inycste d In
ne watch Industry In this country.
The canning and evaporating busi-
scss Is rapidly extending In tho South.
The eggs Of single sturgeon.
,ountcd by Frank Buckland. numbered
'2l, 900 and weighed forty-hve pounds.
-ArkansaO Traveller.
Photographs Of tho interior Of the
living eye we're exhibited recently at .
meeting Of the Canadian Institute by
DR.. Rosebough. Of Toronto. One Of
them showed upon the retina the in
verted picture of tho objects at which
the eye was looking.
"A French Psychologist has been
endenvoring by experiment to gain
light as to the effect OF baths upon the
system. He finds that cold baths In
crease the demand Of the systom for
oxygen. and so affect the action Of tho
lungs as to double or treble tho quantity
OF air passing through them In given
time.-R y Ledger.
"A novel aid to instantaneous photog-
raphy has been devised by two Berlin
chemists. 1t consists Of an explosive
powder made of pulverized magnesium,
chlorate of potash and sulphide Of anti
mony. When this Is ignited II will
illuminate the darkest room with a
flash lasting only one-fortieth Of a
second. but long enough to obtain a
photograph of person or object in the
apartment
Salt brine Ia used In Sheffield, Eng,
for hardening steel. says an exchange
The mixture improves with age and
use. and TO such an extent that Its value
Is largely increased. In some cases
these tanks arc fifty years old. and
have value In proportion to their age.
II appears that the constant dipping Of
the hot metal into the same solution al
ters in some way its character. Fraf,k
Leshe's Met0spaper.
The manufacture Of rabies has
lately reached such perfection that the
artificial product Is often more valua-
BILE than the natural stone. The pro-
cess employed Is that of M Frenzy.
who described 1t to the Paris Academy
Of Science. Discarding niethed dis
covered BY him some years ago, he
now dfsssives nlumnia Ia huoride OF
calcium, and obtains red crystals Of
alumina, or perfect rubies, which may
be made Of largo si0c. --FrGak Leslie's
Newspaper.
Starting on DR.. Dawson's assump-
ton that one foSt Of coal represents
fifty generations Of coal plants, and
that each generation took ton years to
mature-a very moderate assumption
and taking the actually measured thick
ness Of the coal measures In some To-
calitieS at 10000 feet, Prof. Huxley cal
culatcs that tho time represented by
the coal formation alone would be
6,o0o. 900 years -sufIicion. to show that
when we come TO deal with geological
time the unit Of measurement is 1,000,-
900 years.
"A curious effect Of the earthquake
In the north of Italy and south Of
France has recently como to the atten-
ton Of medical circles In Paris. A
telegraph operator. who was sending q
message at the time Of one Of the moro
severe shocks, lost his consciousness
and remained insensible for ten min
uies. On recovery he did not expert
ence any great suffering, bat In the
course Of two months symptoms of
paralysis Of the arm and face began to
manifest themselves, and his condition
has now become quite serious 1t is
supposed that he received powerful
shock of earthquake electrioity."-
~ y Ledger.